asyncCompleteTest.test.js

describe('AsyncActions', () => {
  beforeAll(() => {
    mockStore = ReduxMockStore.default(middlewares);
    initialState = {};
  });

  beforeEach(() => {
    fetch.resetMocks();
  });

  it('Does a getRandomAdvice action successful', () => {
    fetch.mockResponse(JSON.stringify({slip: {
      advice: 'Advice'
    }}));

    const expectedActions = [
      { type: 'REQUEST_ADVICE' },
      { payload: 'Advice', type: 'RESPONSE_ADVICE_SUCCESS' },
    ];
    const store = mockStore(initialState);

    return (
      store.dispatch(actions.getRandomAdvice()).then(() => {
        expect(store.getActions()).toEqual(expectedActions);
      })
    );
  });

  it('Does a getRandomAdvice action when the server is down', () => {
    fetch.mockResponse(JSON.stringify({slip: {
      advice: 'Advice'
    }}), {status: 500});

    const expectedActions = [
      { type: 'REQUEST_ADVICE' },
      { type: 'RESPONSE_ADVICE_FAILURE' },
    ];
    const store = mockStore(initialState);

    return (
      store.dispatch(actions.getRandomAdvice()).then(() => {
        expect(store.getActions()).toEqual(expectedActions);
      })
    );
  });

  it('Does a getRandomAdvice successful', () => {
    fetch.mockReject(new Error());

    const expectedActions = [
      { type: 'REQUEST_ADVICE' },
      { type: 'RESPONSE_ADVICE_FAILURE' },
    ];
    const store = mockStore(initialState);

    return (
      store.dispatch(actions.getRandomAdvice()).then(() => {
        expect(store.getActions()).toEqual(expectedActions);
      })
    );
  });
});